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This study shows that when smokers interested in reduction are provided with an e-cigarette that has cigarette-like nicotine delivery, they are more likely to achieve significant decreases in tobacco-related toxicants, such as lower exhaled carbon monoxide levels. The researchers conducted a randomized controlled trial of 520 participants who smoked more than nine cigarettes a day, were not currently using an e-cigarette device, and were interested in reducing smoking but not quitting

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Consommation [modifier | modifier le code] Au dbut du XX e sicle, le tabac est cultiv et consomm sur tous les continents

Charcoal used

A dilution airflow of 0.5L/min was applied, resulting in a dilution factor of 0.1803 (Dilution Factor = Volume of Smoke / (Volume of Smoke + Volume of Fresh Air)